Coil discharge method for hot-rolled steel coil
A technology of hot-rolling steel coils and steel coils, which is applied in the field of steel rolling, and can solve the problems of long unloading time of accidental coils
Active Publication Date: 2017-08-18
SHOUGANG JINGTANG IRON & STEEL CO LTD
View PDF6 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The embodiments of the present invention provide a method for unloading hot-rolled steel coils to solve the technical problem of long unloading time for accidental coils
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] The embodiment of the present invention solves the technical problem of long unloading time of accidental coils by providing a method for unloading hot-rolled steel coils. The general idea is as follows:
[0039] First, when the support roller and the outermost circle of the steel coil are in contact, the reel is controlled to perform the first reversal, so as to loosen the outer n circles of the steel coil until the sum of the gaps is greater than or equal to the predetermined gap value, and then After the tail of the steel coil is fixed on the outermost circle of the steel coil, when the supporting roller and the outermost circle of the steel coil are in a disengaged state, the reel is controlled to perform a second reversal, so as to reverse to the current position of the reel. The expansion diameter value is greater than the shrinkage diameter of the reel by a predetermined difference; finally, the unloading trolley is raised until the supporting roller is in the sta...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a coil discharge method for a hot-rolled steel coil. The method is applied to the technical field of rolled steel. The method comprises the following steps: controlling a coiling drum to carry out primary reverse rotation in a contact state of a carrier roller and the outermost ring of the steel coil, so as to enable the sum of loosened gaps formed through rotation of the n outer rings of the steel coil to be greater than or equal to a predetermined gap value; fixing the tail part of the steel coil to the outermost ring of the steel coil; controlling the coiling drum to carry out secondary reverse rotation in a secondary expansion state in a separation state of the carrier roller and the outermost ring of the steel coil until the current diameter expansion value of the coiling drum is a predetermined difference value greater than the contraction diameter of the coiling drum; and ascending a coil discharge trolley until the carrier roller is in a coil carrying state relative to the steel coil, controlling the coiling drum to be in a contraction state, and locating movable support to be at an open position relative to the coiling drum, so as to descend the steel coil from the coiling drum. The method disclosed by the invention solves the technical problem of a long coil discharge time of a failed coil, and then shortens the coil discharge duration of the failed coil, reduces the complexity, and realizes recovery for normal production of a coiling machine as soon as possible.
Description
technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method for unloading hot-rolled steel coils. Background technique [0002] The normal coil unloading process of the coiler in the hot-rolled strip steel production line is as follows: the coiler is connected to the coil under the state of primary expansion; the head of the strip is wound around the coil for 4-6 laps, and then the coil is expanded for the second time to establish the coil steel tension. The roll-assisting roller is opened; after the roll is formed, the unloading trolley rises to touch the roll and the tail is pressed successfully, and the roll stops rotating; the locking cylinder of the supporting roller is locked, and the roll shrinks and the steel coil is separated from the roll, and the weight of the steel coil falls on the On the coil unloading trolley; the movable support is opened, the coil unloading trolley moves to unload the steel coil, and the co...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B21C47/24
CPCB21C47/24
Inventor 张维中项宝胜刘顺东王超张建华
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD